Stark broadening in non-LTE stellar atmospheres - Effects on occupation numbers and line profiles

Details Stark broadening in non-LTE stellar atmospheres - Effects on occupation numbers and line profiles Stark broadening in non-LTE stellar atmospheres - Effects on occupation numbers and line profiles

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...139..237w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 139, no. 1, Oct. 1984, p. 237-239.

Astronomy and Astrophysics

Astrophysics

5

Balmer Series, Doppler Effect, Line Spectra, Nonequilibrium Thermodynamics, Stark Effect, Stellar Atmospheres, Linearization

Scientific paper

Non-LTE models in which the hydrogen absorption coefficients are approximated by depth independent Doppler profiles are shown to adequately describe the atmospheres of stars with T eff = 32,000-100,000 and log g = 4.1-8. It is demonstrated that the Balmer profiles are only marginally affected by more realistic coefficients. The corrections have the proper sign but are too small (by a factor of 5-10) to explain the observed discrepancies, such as those in the case of CPN Longmore 8 and Tau Sco.

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